Problem	15554
Created	2011-12-31
Source	KGS game
Rating

Difficulty	2.7 kyu
Average Solve Time	74 secs
User Attempts	540 / 1515
Solve Ratio Rating	5 kyu
	rating history

Black played 1. White to defend and avoid ko.

(;AB[sb]AB[rb]AB[rc]AB[qc]AB[pc]AB[pd]AB[oe]AB[od]AB[nd]AW[pe]AW[pf]AW[pg]AW[qh]AW[rg]AW[ri]AW[si]AW[sj]AW[qd]AW[rd]AW[sd]AW[sc]AB[of]AW[og]AB[ng]AB[nh]AB[oh]AB[ph]AB[qi]AB[pj]AB[rj]AB[rk]AB[sk]AB[rf]LB[rf:1]AP[goproblems] (;W[qg];B[sg] (;W[rh];B[qe] (;W[se];B[sf]) (;W[re];B[se]) (;W[sf];B[se]) (;W[qf];B[sh]) (;W[sh];B[qf])) (;W[sh];B[rh]) (;W[qe];B[rh] (;W[sh];B[rh]) (;W[qf];B[sh]) (;W[re];B[sf] (;W[sh];B[rh]) (;W[qf];B[se]) (;W[se];B[qf])) (;W[sf];B[se] (;W[sh];B[rh]) (;W[qf];B[re]) (;W[re];B[qf]))) (;W[qf];B[se] (;W[qe];B[rh];W[sh];B[rh]) (;W[re];B[qe]) (;W[rh];B[qe];W[re];B[qe]) (;W[sh];B[rh])) (;W[re];B[rh] (;W[sh];B[rh];W[sf];B[se]C[Ko.]) (;W[sf];B[se]C[Ko.]) (;W[se];B[sh];W[sf];B[qf]) (;W[qf];B[qe]) (;W[qe];B[sh])) (;W[sf];B[se] (;W[re];B[qe]) (;W[qe];B[rh] (;W[sh];B[rh]) (;W[qf];B[re]) (;W[re];B[qf]))) (;W[se];B[sf];W[qe];B[rh] (;W[sh]) (;W[re];B[qf]))) (;W[rh];B[qe] (;W[qf];B[qg]) (;W[re];B[se]) (;W[se];B[qg] (;W[qf];B[qg]) (;W[re];B[sf];W[qf];B[qg]) (;W[sf];B[qf]) (;W[sg];B[qf]) (;W[sh];B[sg])) (;W[sg];B[se]) (;W[qg];B[se];W[qf];B[re])) (;W[qf];B[se];W[qe];B[rh];W[sh];B[sg]C[Ko]) (;W[qe];B[sg] (;W[rh];B[qf] (;W[qg]C[Seki.RIGHT]) (;W[re];B[se]C[Ko.]) (;W[se];B[qg] (;W[sf];B[re]) (;W[re];B[sf])) (;W[sf];B[se];W[qg]C[Seki.RIGHT]) (;W[sh];B[qg])) (;W[qf]) (;W[re];B[rh];W[qg];B[sh]) (;W[qg];B[rh];W[re];B[sh]) (;W[sf];B[se];W[rh];B[qf];W[qg]C[Seki.RIGHT]) (;W[se];B[rh];W[qg];B[sh])) (;W[re];B[sg] (;W[qf];B[rh] (;W[sf]C[White is alive. White gets either sente or a big gote move.RIGHT]) (;W[sh];B[rh] (;W[sf]C[White is alive. This is more or less equal in points to the seki.RIGHT]) (;W[qg];B[qe])) (;W[qg];B[qe])) (;W[qe];B[rh];W[qg]) (;W[rh];B[se]C[Ko.]) (;W[se];B[sf];W[qe];B[qg];W[qf];B[qg]) (;W[qg];B[rh] (;W[sh];B[rh];W[sf];B[se]C[Ko.]) (;W[sf];B[se]C[Ko.]) (;W[se];B[sh];W[sf];B[qf]) (;W[qf];B[qe]) (;W[qe])) (;W[sf];B[se]C[Ko.])) (;W[sf];B[qe] (;W[qf];B[qg]) (;W[re];B[se]) (;W[se];B[qg];W[qf];B[qg]) (;W[qg];B[se];W[re];B[se]) (;W[sg];B[qg] (;W[re];B[se]) (;W[qf];B[qg]) (;W[rh];B[qf]) (;W[se];B[qf]) (;W[sh];B[qf])) (;W[rh];B[se] (;W[re];B[se]) (;W[sg];B[re]))) (;W[se];B[qe];W[sf];B[qg];W[qf];B[qg]) (;W[sg];B[qe] (;W[sf];B[qg] (;W[re];B[se]) (;W[qf];B[qg]) (;W[rh];B[qf]) (;W[se];B[qf]) (;W[sh];B[qf])) (;W[se];B[qg] (;W[qf];B[qg]) (;W[sf];B[qf]))) (;W[sh];B[qe];W[sf];B[qg];W[re];B[qf]))